go get gocode -> apt install

plugins/c9.ide.language.go/README.md

@@ -15,8 +15,8 @@ This plugin is still marked "experimental". To use it in Cloud9,
 please go to Cloud9 > Preferences > Experimental > Go Code Completion.
 
 Make sure that go and gocode are installed on your path
-sudo apt install go
-go get github.com/stamblerre/gocode
+- sudo apt install go
+- sudo apt install gocode
 
 ## License